Search function based on list of operations

[XanderVertegaal]

- Input form
- Submit button
- Basic validation + error messages
- Debouncing
- Loading indicator
- Error handling
- Active subscription with memory leak prevention

Let's go with the list of operations!

[megodoonch]

Since Vulcan already supports search, maybe we don't need our own search form.
However, we were thinking that it would be cool if selecting from an existing list of operations names would implement a Vulcan search for tree node labels containing that name.

[XanderVertegaal]

I still think this is a cool idea :) We'll see if it's possible to build this!

[XanderVertegaal]

We will be going for a list of operations / internal node labels. When clicking on a label, you should see all sentences in the corpus with that operation. We can hook into Vulcan's internal search function for this.